Classifying Angles
Often, the angles are described based on their degree measure: they can be acute, right, or obtuse. Watch this lecture series and complete the exercises to practice identifying different types of angles.
Practice
Angle types - Answers
1. The angle shown makes a square corner.
Therefore, it is a right angle.
2. The angle shown is smaller than a right angle.
Therefore, it is an acute angle.
3. 
is an acute angle.
4. 
is a straight angle.